Re: [CAD_CAM_EDM_DRO] Re: DC motor controller

Hi John,

>
> I can follow along with that, But doesn't overshoot & undershoot
> still equate to missed steps or even added steps? Ruined work?
>

No. Inside the drive are two counters. One is controlled by the
step/direction inputs and one is controlled by the encoder. The drive
does it's best to make sure the counters match. If the motor overshoots,
the counts don't match up so the drive turns the motor back until they
do match.

> If I used a spindle head at say 1200 rpm one day then a 30000 rpm
> router the next, does all this tuning need to be redone.
>

You tune for worst case (max speed and acceleration). Once that is done
you don't need to worry about it.

Les